Poland has lots of great sites and attractions for children. Fun, free and cheap activities await kids and there are lots of great theme parks, water parks, zoos, family parks, outdoor and indoor places, museums to check out in Poland. The best experience you can offer your kids in Poland is a visit to the Aquarium Gdynskie where you will be able to discover the secrets of underwater life and see some cool and weird creatures. This spot remains surrounded by sea on all sides, and there are thousands of marine and terrestrial animals and curiosities to see from every part of the world.